1. Right Answer: A
Explanation: (A) Partial thromboplastin time is used to monitor the effects of heparin, and dosage is adjusted depending on test results. It is a screening test used to detect deficiencies in all plasma clotting factors except factors VII and XIII and platelets. (B) Hemoglobin is the main component of RBCs. Its main function is to carryO2from the lungs to the body tissues and to transport CO2back to the lungs. (C) RBC count is the determination of the number of RBCs found in each cubic millimeter of whole blood. (D) PT is used to monitor the effects of oral anticoagulants, e.g., coumarintype anticoagulants.
2. Right Answer: C
Explanation: (A) Using an electric razor prevents the risk of cuts while shaving. (B) Any physician or dentist should be informed of anticoagulant therapy because of the risk of bleeding due to a prolonged PT. (C) The client should be instructed to consult with his physician. Aspirin is avoided because it potentiates the affects of oral anticoagulants by interfering with platelet aggregation. (D) Identification bracelets are necessary to direct treatment, especially in an emergency situation.
3. Right Answer: A
Explanation: (A) The therapeutic blood level range of theophylline is 1020 mg/mL. Therapeutic drug monitoring determines effective drug dosages and prevents toxicity. (B, D)This value is a toxic level of the drug. (C) This value is a nontherapeutic level of the drug.
4. Right Answer: B
Explanation: (A) The client would not receive therapeutic effects of the glucocorticoid when it is inhaled through constricted airways. (B) Bronchodilating the airways first allows for the glucocorticoid to be inhaled through open airways and increases the penetration of the steroid for maximum effectiveness of the drug. (C) Inac- Inaccurate use of the inhalers will lead to decreased effectiveness of the treatment. (D) Client teaching regarding the use and effects of inhalers will promote client understanding and compliance.
5. Right Answer: B
Explanation: (A) It is sufficient to rinse the plastic holders with warm water at least once per day. (B) It is important to rinse the mouth after each use to minimize the risk of fungal infections by reducing the droplets of the glucocorticoid left in the oral cavity. (C) Antacids act by neutralizing or reducing gastric acid, thus decreasing the pH of the stomach. 'Neutralizing' the oral mucosa prior to inhalation of a steroid inhaler does not minimize the risk of fungal infections. (D) Rinsing prior to the use of the glucocorticoid will not eliminate the droplets left on the oral mucous membranes following the use of the inhaler.
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